Moderately strong antiferromagnetic exchange coupling in a dinuclear complex containing a µ-hydroxo-µ-carboxylatodicopper(II) core

Abstract

The dinuclear complex [Cu₂L₂(µ-OH)(µ-C₆H₅CO₂)][ClO₄]₂(L = 1,4,7-trimethyl-1,4,7-triazacyclononane) has been synthesized and characterized by X-ray crystallography and from temperature-dependent susceptibility measurements which established a moderately strong, intramolecular, antiferromagnetic exchange coupling (J=–66 cm^–1, H=–2JS₁·S₂, S₁=S₂=½) and a magneto–structural correlation between the Cu–O–Cu angle and J for complexes containing a Cu^II₂µ-hydroxo-µ-carboxylato core.